<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<script>
			function Humans(name){
				this.name=name;
			}
			function Man(){
				Humans.call(this,"Merry");
				this.age=11;
			}
			var man1=new Man();
			alert(man1.age);
			alert(man1.name);
		</script>
	</body>
</html>
